opac/opac-tags_subject.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright 2000-2002 Katipo Communications
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20
  21 =head1 opac-tags_subject.pl
  22
  23 TODO :: Description here
  24
  25 =cut
  26
  27 use Modern::Perl;
  28
  29 use C4::Auth;
  30 use C4::Context;
  31 use C4::Output;
  32 use CGI qw ( -utf8 );
  33 use C4::Biblio;
  34
  35 my $query = CGI->new;
  36
  37 my $dbh = C4::Context->dbh;
  38
  39 # open template
  40 my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
  41     {
  42         template_name   => "opac-tags_subject.tt",
  43         query           => $query,
  44         type            => "opac",
  45         authnotrequired => ( C4::Context->preference("OpacPublic") ? 1 : 0 ),
  46         debug           => 1,
  47     }
  48 );
  49
  50 my $number = $query->param('number') || 100;
  51
  52 my $sth = $dbh->prepare("SELECT entry,weight FROM tags ORDER BY weight DESC LIMIT ?");
  53 $sth->execute($number);
  54
  55 my %result;
  56 my $max=0;
  57 my $min=9999;
  58 my ($entry,$weight);
  59 while (($entry,$weight) = $sth->fetchrow) {
  60     $result{$entry}=$weight;
  61     $max = $weight if $weight > $max;
  62     $min = $weight if $weight < $min;
  63 }
  64
  65 $min++ if $min == $max;
  66
  67 my @loop;
  68 foreach my $entry (sort keys %result) {
  69     my %line;
  70     $line{entry} = $entry;
  71     $line{weight} = int(($result{$entry}-$min)/($max-$min)*25)+10;
  72     push @loop, \%line;
  73 }
  74 $template->param(
  75     LOOP => \@loop,
  76     number => $number
  77 );
  78
  79 output_html_with_http_headers $query, $cookie, $template->output;